public void CorrectRequestForGetAllByTag()
{
var factory = Substitute.For <IConnection>();
var client = new ImagesClient(factory);
client.GetAllByTag("mytag");
var parameters = Arg.Is <List <Parameter> >(list => (string)list[0].Name == "tag_name" && (string)list[0].Value == "mytag");
factory.Received().GetPaginated <Image>("images", parameters, "images");
}